Pumping apparatus



Oct. 2, 1928. 1,686,220-

L. MORGAN FUMPING APPARATUS Filed Sept. 30, 1925 4 Sheets-Sheet 1 lam Marga Oct. 2, 1928.

L. MORGAN PUMPING APPARATUS Filed Sept. 50; 1925 4 Sheets-Sheet 2 INVENTOR.

ATTORNEY.

Patented Get. 2, 1928.

UITED STATES LESTER MORGAN, or NEW YORK, 1v. Y.

PUMPING- APPARATUS. j

Application filed September 30, 1925. Serial No. 59,600,-

This invention relates generally to umping apparatus for liquids and has re erence specifically to certain improvements in the construction and operation of a plunger type pump. 7

It is well known that plunger type pumps have been constructed, which include a suction chamber, suction and delivery valves therein, and two plungers operating together to displace a quantity of water at each end of the stroke. The specific type of pump briefly described is known as a differential pump and its distinguishing feature is that it requires only one set of suction valves and delivery valves. In this construction however the usual amount of power'is required to operate the plungers since movement thereof is constantly against the full head of water in the delivery chamber.

lVith the foregoing in .mind it is the purpose of the present invention to provide a pump of this character utilizing the weight of the water having been raised, to aid in the operation of a plunger, which comprises a hollow toggle connection capable of movement into and out of axial alinement without changing its capacity.

The invention will be described in detail in the following specification, set forth in the appended claims and illus'tratively exemplified in the accompanying drawings, in which,

Figure 1, is a side elevational view of my improved pump; Figure 2 is an end elevational view of the same; Figure 3 is a substantially horizontal, longitudinal, sectional view taken on line 3-3 of Figure 1; and Figure 4 is a substantially vertical sectional view taken on line 4-4 of Figure 1;

Referring to the drawings, 10 designates a base or bed plate, upon which is mounted, at one end, a cylindrical casing 11, having two spaced internal annular flanges 12 and 13, which divide the interior of the casing into three chambers, the lowermost 14 being the intake chamber, the intermediate being the suction chamber 15, and uppermost comprising the delivery chamber 16. The intake chamber 14 is provided with an inlet opening or pipe 17 which is connected to a s0 supply of water to be pumped by means of a suitable pipe connection 18. An upright bearing 19 is provided in the base of the casing 11 and chamber 14, and the bore thereof is adapted to, receive a stem 20 of 55 a disc suction valve 21 cooperating with the face of the flange 12 in the suction chamber 15. A lifting lever 22 is mounted on a shaft 23 projecting through the chamber 14 and at its free end the lever 22 is forked and provided with slots 23 to receive pins 24 disposed in the stem 20 of the valve. The

end of the shaft 23 projecting from the casing 11 carries a lever 25 which is connected 3 tegral with the bearings 29. The free arm of the bell crank lever 27 is provided witha roller 32, yieldably held in contact with a cam 33 on the shaft 30, by means of a spring 34.

The suction chamber 15 is shut off from the delivery chamber 16 by a delivery disc valve 35, which seats upon the flange 13 be tween the two chambers, and which is pro.- vided with a stem 36 operatingin a spider bearing 37 and having pins 38 to receive the slotted ends of a yoke lifting lever 39, the latter being carried by a shaft 40 which projects through the delivery chamber 16, and carries a lever arm 41 at its outer end. Operation of the Valve 35 is effected by means of alink connection 41 between the arm 41 and an arm 41 mounted on the shaft 28 and provided with a roller 41 yieldably held in contact with a cam-41 turning with the camshaft 30. The open end of the delive'ry chamber 16 is flanged to receive a dome42 having an outlet openingto receive: the end of a delivery pipe 43 Referring again to the suction chamber 15 it will benoted that the latter and the delivery chamber16 are connected by means of pressure pipe 44 comprising a substan tially U-shaped fitting provided with a valve 45, the stem 46 of which carries an arm 47 connected to a lever arm 48, on the shaft 28,, by means of a link 49. The free end of the lever arm 48 is provided with a roller 50 which is yieldably held in contact with a cam 51 by means of a spring 52, the cam 51 being keyed to the cam shaft 30.

' A cylinder 53 integral with thecasing 11' and communicating with the suction cham ber 15 is arranged to receive a toggle piston or plunger 54, which projects between'the casing 11 and an upright tower 55supported on the bed plate 10 at the opposite end thereof from the casing 11. The toggle plunger 54 comprises preferably four sections, the

first thereof is a straight cylindrical member 56, reciprocating in the cylinder 53 and having hemispherical enlargement at its end provided with a stufling box 57 the second and third sections 58 and 59, respectively, are identical and comprise a straight midcylindrical portion terminating at one end in a ball portion 60, to form a ball and socket joint with the hemispherical enlargement of the adjacent section, and at the opposite end in the hemispherical enlargement itself. Suitable'stufiingboxes 57 are included in each joint, and the fourth section 61 is an integral part of the tower 55 and projects horizontally therefrom in co-alinement with the axis of the cylinder 53. Suitable outside link toggle connections 62 are provided between the joints of the sections, as illustrated clearly in Figure 1. The second section 58 carries a yoke lug 63, extending laterally thereof,and connected'to a crank arm 64 by means of a pitman rod connection 65, the,

arm 64 beingcarried by an upright shaft 66 journaled' in' the bearings 67 of a frame 68.

The frame 68 is mounted on the bed plate 10, midway of its length, and is provided with a counter shaft 69 having a beveled pinion 70 in'mesh with a bevel gear 71 turning with the shaft 66. Adjacent the lower elevation of the shaft 66 the latter carries a bevel miter gear 72 in mesh with a Sin)- il-ar miter gear 73 on the end of the cam shaft 30, which is. supported adjacent the frame 68 by a hanger bearing 74. Power for operating this unit is derived through a pulley wheel 75 on the counter shaft 69 and. belt 76 driven from a pulley 7 on the shaft of'a motor ,78 also mounted on the bed plate Equal pressure is maintained in the delivery pipe'43 and tower 55 by means of a pipe connection 79, which enters the delivery pipe 43 above the dome 42 at one end and att-he other'in the cover 80 of the tower 55,

The piston or plunger head 81, illustrated in detailin Figure 3, comprises a cup shaped member having a substantially wide continuous groove 82 in its peripheral surface adjacent the open end, the groove 82 being arranged to receive an annular narrow interiorflange 83 of the cylindrical portion of' the first section 56. The head 81 is ground tocprovide a sliding fit in the bore of the piston itself, so as to enable the head to move relatively thereto.

The operation of my improved pump is as follows: The motor 78 is started imparting rotary movement to the cam shaft 30 and reciprocating lateral movement to the toggle piston or plunger 54. The intake cam 33then lifts the arm 27 and through the other connections, the valve disc 21 is raised. The water in the chamber-14 is under low pressure and simultaneously with the opening of the valve 21, the plunger 54 recedes so as to draw a sufficient amount of water into the suction chamber 15 to fill the latter.

The delivery valve 35 is still closed following closed position of the intake valve 21, and in the delivery chamber 16, pipe 43, and consequently the pipe 79, tower 55 and plunger 54 is a head of water under pressure. The cars 51 then reaches a point when the connection opens the valve 45 and water under pressure rushes into the suction chambcr'15 to equalize the pressure in the two chambers 1.5 and 16. I now have an equal pressure of water in both chambers and plunger 54. cam shaft 30 causes the cam 41 to open the valve The movement of this valve 35 is not against the pressure of the head of water in and above the delivery chamber 16,

because the pressure is the same on both Subsequent movement of the and the-capacity of the hemispherical end portions of the sections, the dimensions being such as to enable the capacity of coinplete plunger to remain exactly the same in any position it is forced to assume by the movementof the crank 64. As the plunger thrusts forward, the head 81, which up to this point in the operation has been held in projected position by the head of water in the plunger, recedes into the latter and against the flange 83, as the pressure in the suction and delivery chambers exceeds the pressure in the piston. It is then the amount of liquid, displaced by the piston in the suction chamber 11, which is forced past the valve into the delivery chamber. The

amount of power necessary to efl'ectthis displacement is afforded by the motor 78 operating the crank 64 and oscillating the toggle plunger.

l/Vhat I claim is l A pumping apparatus, comprising a casing having intake, suction and delivery chambers, and a pump piston therefor, ineluding a hollow sectional pistonrod, means for simultaneously reciprocating and oscil lating the said sections, and meansfores tablishing communication between the de-' livery side of said chamber and the interior of said piston rod.

2. A pumping apparatus, comprising a casing having intake, suction and delivery chambers, the suction chamber thereofbeinge,

provided with a cylinder, a pump piston including a hollow sectional piston rod vfor the cylinder, means for establishing communication between the delivery chamber and the hollow piston rod. and means for simultaneously reciprocating and oscillating the said sections.

3. A pumping apparatus, comprising a casing having intake, suction and delivery chambers, the suction chamber being provided with a cylinder in 7 communication therewith, suction and delivery valves for said suction chamber, a pump piston including a hollow sectional piston rod for the cylinder, means for simultaneously reciprocating and oscillating the sections and operating the valves, and means for establisl ing communication between the delivery chamber and the interior of said piston rod.

4. A pumping apparatus comprising a casing having intake, suction and delivery chambers, the suction chamber being provided with a cylinder, suction and delivery valves for the suction chamber, a pump piston including a hollow sectional piston rod for the cylinder comprising a floating piston portion, a communicating member between delivery chamber and the interior of the piston, and means for simultaneously reciprocating and oscillating the sections and oper-' ating the valves.

5. A piston rod for a pump of the character described, comprising a plurality of .cally into intake, suction and deliverychambers, the suction chamber being provided witha laterally disposed integral cylinder, a suction valve between the intake and delivery chambers and a delivery valve be tween the suction and delivery chambers, a

valve controlled connection between the suction and delivery chambers, a pump piston including a hollow sectional piston rod having one end closed and reciprocating in said cylinder and the other end fixed, means operating a mid section of the rod to reciprocate'the closed end,'means for opening.

and closing the suction and delivery valves, means for opening and closing the valve controlled connection between the suction and delivery chambers, and a connecting means between the delivery chamber and the interior of the fixed end of said piston rod.

In testimony whereof I affix my signature.

v LESTER MORGAN. 

